YOU SAID:

there's always a bigger fish

INTO JAPANESE

いつももっと大きな魚がいる

BACK INTO ENGLISH

There is always a bigger fish

INTO JAPANESE

いつもより大きな魚がいる

BACK INTO ENGLISH

I have a bigger fish than usual

INTO JAPANESE

私はいつもより大きな魚を飼っています

BACK INTO ENGLISH

I have bigger fish than usual

INTO JAPANESE

私はいつもよりも大きな魚を飼っています

BACK INTO ENGLISH

I have bigger fish than usual